all of helen supplies were in a sted.which she pulled not charlia.His job was to look out for bears the first bears they met ran away when helen fired her flare gun but one day they met abear that was not afraid of the gun it ran at tham Charlie grabbed the bear’s leg and wouldn’t let go the bear tried to bite the dog but Charlie moved out of the way.eventually the bear ran away Helen thanked Charlie by letting him sleep in her tent from then on